Effects of the yield criterion on local deformations in numerical simulation of profile forming

被引：28

作者：

Hopperstad, OS ^{[1
]}

Berstad, T ^{[1
]}

Ilstad, H ^{[1
]}

Lademo, OG ^{[1
]}

Langseth, M ^{[1
]}

机构：

[1] Norwegian Univ Sci & Technol, Dept Struct Engn, N-7034 Trondheim, Norway

来源：

JOURNAL OF MATERIALS PROCESSING TECHNOLOGY | 1998年 / 80-1卷

关键词：

aluminium alloys; stretch bending; plastic anisotropy; finite element analysis;

D O I：

10.1016/S0924-0136(98)00203-9

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Three anisotropic plasticity models are implemented in LS-DYNA3D for shell analysis using backward Euler integration algorithms. The models have different yield criteria (Hill, Barlat and Lian, and Karafillis and Boyce) but have all associated flow rules and non-linear isotropic strain hardening. The anisotropic models are applied in finite element analysis of a stretch bending process for aluminium extrusions. In addition, simulations with the von Mises yield criterion and a non-quadratic yield criterion for isotropic materials are carried out. Plastic anisotropy and the shape of the yield surface are found to have significant effect on the local deformations predicted in the simulations. (C) 1998 Elsevier Science S.A. All rights reserved.

引用

页码：551 / 555

页数：5

共 11 条

[1] PLASTIC BEHAVIOR AND STRETCHABILITY OF SHEET METALS .1. A YIELD FUNCTION FOR ORTHOTROPIC SHEETS UNDER PLANE-STRESS CONDITIONS [J].